Battery - Jump Starting and Charging Procedures

REF. NO.: MBNA 54/50

TO: OUR MERCEDES-BENZ PASSENGER CAR DEALERS

DATE: October 1992

SUBJECT
ALL MODELS BATTERY JUMP-STARTING AND CHARGING

With the increasing number of complex electronic control modules in modern automobiles comes an increased risk of electronic component damage when working with the battery. To avoid damage to the vehicle's electrical system, certain procedures must be followed.

Warning!

Batteries contain sulfuric acid and generate a highly flammable and explosive hydrogen gas. Always wear eye protection, preferably chemical safety goggles or a face shield when working on or near batteries. Never lean over a battery. Improper connecting or disconnecting of battery terminals, jumper cables or charger clamps can create sparks. A spark, flame or lighted cigarette can cause a battery to explode and cause serious facial/eye injuries.

Refer to S.I. MBNA 54/22 (11/88) for a complete drscription of proper battery care and handling procedures.

Jump starting

Caution:
The power surges generated during a typical jump start are substantial. While the electronic components in all Mercedes-Benz automobiles are designed to withstand a normal jump-starting attempt, damage may occur if the incorrect procedure is used. Therefore, all service personnel are cautioned that Mercedes-Benz vehicles are to be jump started only from another 12 volt battery. The use of starting devices (such as boost-start chargers, free standing generators, etc.) is likely to cause extensive damage to the electrical system and its components.

Charging

Caution:
Always disconnect the battery from the vehicle's electrlcal system before connecting a battery charger. Most battery chargers generate voltage high enough to cause electrical system and component damage.

In all cases, the instructions in the owner's manual should be followed. Damage caused by improper jump starting and/or charging is not covered under warranty, since this is considered a workshop risk.





Labeling
A new label (Figure 1) is being installed in all models at the VPC. In case this label is missing or damaged, it may be ordered as a literature item through MB-NET. The labels are available individually.

Description Part Number Dealer Net ($)

Battery charging warning label S-2580-092 0.01











The label is installed in the locations shown in the illustrations.